2nd/10_Wiki/Dev/Topic_Java/Java_Conditions_Real_Life.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
java-conditions-real-life	Java Conditions Real Life	Programming_Language	draft	conceptual		자바 조건문 실전 예제		B	0.87	2026-07-04	2026-07-04			java programming w3schools conditions examples	https://www.w3schools.com/java/java_conditions_reallife.asp

Java Conditions Real Life

🎯 한 줄 통찰 (One-line insight)

This chapter is a synthesis roundup — door-code checks, sign detection, voting eligibility, even/odd via modulo, temperature bands, and access control — showing that the entire if/else/else-if/nested-if/logical-operator toolkit converges on the same handful of real-world decision patterns. [S1]

🧠 핵심 개념 (Core concepts)

• Door code check — equality comparison gating access. [S1]
• Positive/negative/zero classification — three-way branch via if/else-if/else. [S1]
• Voting age check — simple threshold comparison. [S1]
• Nested voting + citizenship — combining nested if with else at each level. [S1]
• Even/odd via modulo — myNum % 2 == 0 as the even-test idiom. [S1]
• Temperature banding — three-way else-if chain by numeric range. [S1]
• Access control — isLoggedIn && (isAdmin || securityLevel <= 2). [S1]

🧩 추출된 패턴 (Extracted patterns)

• Modulo-based even/odd check — myNum % 2 == 0 is the canonical idiom, reused across virtually every language's conditions tutorial (same pattern in Python's chapters). [S1]

📖 세부 내용 (Details)

• Door code: int doorCode = 1337; if (doorCode == 1337) { System.out.println("Correct code. The door is now open."); } else { System.out.println("Wrong code. The door remains closed."); }. [S1]
• Sign classification: int myNum = 10; if (myNum > 0) {...} else if (myNum < 0) {...} else { System.out.println("The value is 0."); }. [S1]
• Voting age: int myAge = 25; int votingAge = 18; if (myAge >= votingAge) { System.out.println("Old enough to vote!"); } else {...}. [S1]
• Even/odd: int myNum = 5; if (myNum % 2 == 0) { System.out.println(myNum + " is even"); } else { System.out.println(myNum + " is odd"); }. [S1]
• Temperature bands: int temperature = 30; if (temperature < 0) {...} else if (temperature < 20) {...} else { System.out.println("It's warm."); }. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 이 챕터 자체가 앞선 조건문 챕터들(If/Else/Else If/Nested If/Logical Operators)의 실전 종합 예제 모음이다. [S1]

💻 코드 패턴 (Code patterns)

Even/odd via modulo (Java):

int myNum = 5;
if (myNum % 2 == 0) {
    System.out.println(myNum + " is even");
} else {
    System.out.println(myNum + " is odd");
}

✅ 검증 상태 및 신뢰도

• 상태: draft
• 검증 단계: conceptual
• 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
• 신뢰 점수: 0.87
• 중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

• 상위/루트: Java Tutorial
• 관련 개념: Java If Else, Java Nested If, Java Conditions Logical Operators, Java Switch
• 참조 맥락: 조건문 섹션 전체의 실전 종합 예제 — Switch 챕터로 이어짐.

📚 출처 (Sources)

• [S1] W3Schools — Java If ... Else Examples — https://www.w3schools.com/java/java_conditions_reallife.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "Java If ... Else Examples" page (Astra wiki-curation, P-Reinforce v3.1 format).